Results 21 to 30 of about 588,329 (207)

Initial geological considerations before installing ground source heat pump systems [PDF]

open access: yes, 2009
The performance of an open- or closed-loop ground source heat pump system depends on local geological conditions. It is important that these are determined as accurately as possible when designing a system, to maximize efficiency and minimize ...
Busby, Jon   +3 more
core   +1 more source

Two-Stage Alignment of FIB-SEM Images of Rock Samples

open access: yesJournal of Imaging, 2020
Focused Ion Beam Scanning Electron Microscopy (FIB-SEM) tomography provides a stack of images that represent serial slices of the sample. These images are displaced relatively to each other, and an alignment procedure is required. Traditional methods for
Iryna Reimers   +3 more
doaj   +1 more source

Suitability of ground-based SfM-MVS for monitoring glacial and periglacial processes [PDF]

open access: yes, 2016
Photo-based surface reconstruction is rapidly emerging as an alternative survey technique to lidar (light detection and ranging) in many fields of geoscience fostered by the recent development of computer vision algorithms such as structure from motion ...
Carturan, Luca   +6 more
core   +2 more sources

Research of influencing factors on permeability for carbonate rocks based on LBM simulation: A case study of low-permeability gas reservoir of Sinian Dengying Formation in Sichuan Basin

open access: yesFrontiers in Earth Science, 2023
Instruction: Due to the declining production rate of conventional natural gas reservoir and the rising demand for natural gas resources, conventional natural gas resources cannot satisfy the needs of economic development.
Shan Yang   +8 more
doaj   +1 more source

Digital Rock Mechanical Properties by Simulation of True Triaxial Test: Impact of Microscale Factors

open access: yesGeotechnics, 2023
Complex fractures and pore structures in the rock strongly influence the mechanical properties, and the process from compression to failure is complicated.
Wenjie Ma   +9 more
doaj   +1 more source

Digital Rock Analysis on the Influence of Coarse Micro-Fractures on Petrophysical Properties in Tight Sandstone Reservoirs

open access: yesApplied Sciences, 2023
Tight sandstone reservoirs, as typical unconventional reservoirs, have attracted more and more attention worldwide. Compared to conventional reservoirs, the complex microscopic pore structures and micro-fractures of the tight reservoirs are developed ...
Lei Liu   +4 more
doaj   +1 more source

A little rock&love. Creative resources used by brands in mobile advertising [PDF]

open access: yes, 2015
Los cambios sociológicos, culturales y simbólicos que se han producido en la era digital han tenido una gran repercusión en el ámbito de la comunicación y evidencian que es necesario que las marcas tracen nuevos caminos en su búsqueda para conectar con
García Cubells, Rosario   +2 more
core   +4 more sources

A High Throughput Method for Measuring Polycyclic Aromatic Hydrocarbons in Seafood Using QuEChERS Extraction and SBSE

open access: yesInternational Journal of Analytical Chemistry, 2015
National Oceanic and Atmospheric Administration (NOAA) Method NMFS-NWFSC-59 2004 is currently used to quantitatively analyze seafood for polycyclic aromatic hydrocarbon (PAH) contamination, especially following events such as the Deepwater Horizon oil ...
Edward A. Pfannkoch   +5 more
doaj   +1 more source

Estimating pore volume compressibility by spheroidal pore modeling of digital rocks

open access: yesPetroleum Exploration and Development, 2020
: The real pores in digital cores were simplified into three abstractive types, including prolate ellipsoids, oblate ellipsoids and spheroids. The three-dimensional spheroidal-pore model of digital core was established based on mesoscopic mechanical ...
Weibo SUI   +3 more
doaj   +1 more source

Mechanical Behavior and Microstructural Characteristics of Ultradeep Tight Carbonate Rocks With Different Burial Depths

open access: yesFrontiers in Earth Science, 2022
The rapid growth in energy demand has placed more attention on the exploration and development of oil and gas in ultradeep reservoirs. However, deep buried rocks in the special “three high” geological environment exhibit significantly different ...
Ran Zhang   +4 more
doaj   +1 more source

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